public static extern HRESULT AssocQueryStringByKeyW(
ASSOCF flags,
ASSOCSTR str,
RegistryKeyHandle hkAssoc,
string pszExtra,
SafeHandle pszOut,
ref uint pcchOut);
/// <inheritdoc cref="AssocQueryString(uint, ASSOCSTR, PCWSTR, PCWSTR, PWSTR, uint*)"/>
public static unsafe HRESULT AssocQueryString(ASSOCF flags, ASSOCSTR str, string pszAssoc, string pszExtra, Span <char> pszOut, ref uint pcchOut)
{
fixed(char *pszOutLocal = pszOut)
{
return(AssocQueryString((uint)flags, str, pszAssoc, pszExtra, new PWSTR(pszOutLocal), ref pcchOut));
}
}
public static extern HRESULT AssocQueryStringW(
ASSOCF flags,
ASSOCSTR str,
string pszAssoc,
string pszExtra,
SafeHandle pszOut,
ref uint pcchOut);
public static extern int AssocQueryString(
[In] ASSOCF flags,
[In] ASSOCSTR str,
[In] string pszAssoc,
[In] string pszExtra,
[Out, MarshalAs(UnmanagedType.LPTStr)] StringBuilder pszOut,
[In, Out] ref int pcchOut
);
private string GetString(ASSOCSTR astr)
{
const ASSOCF flags = ASSOCF.ASSOCF_NOTRUNCATE | ASSOCF.ASSOCF_REMAPRUNDLL;
var sz = 0U;
qassoc.GetString(flags, astr, null, null, ref sz);
var sb = new StringBuilder((int)sz, (int)sz);
qassoc.GetString(flags, astr, null, sb, ref sz);
return(sb.ToString());
}
//[DllImport (Dll.User, SetLastError = true)]
//private static extern bool SystemParametersInfo (SPI uiAction, uint uiParam, IntPtr pvParam, SPIF fWinIni);
//[DllImport (Dll.User, SetLastError = true)]
//private static extern bool SystemParametersInfo (SPI uiAction, uint uiParam, string pvParam, SPIF fWinIni);
//[DllImport (Dll.User, SetLastError = true)]
//private static extern bool SystemParametersInfo (SPI uiAction, uint uiParam, ref bool pvParam, SPIF fWinIni);
//[DllImport (Dll.User, SetLastError = true)]
//private static extern bool SystemParametersInfo (SPI uiAction, uint uiParam, ref int pvParam, SPIF fWinIni);
/// <summary>Searches for and retrieves a file or protocol association-related string from the registry.</summary>
/// <param name="flags">The flags that can be used to control the search. It can be any combination of <see cref="ASSOCF"/> values, except that only one ASSOCF.INIT value can be included.</param>
/// <param name="assocStr">The <see cref="ASSOCSTR"/> value that specifies the type of string that is to be returned.</param>
/// <param name="doctype">A string that is used to determine the root key. The following four types of strings can be used. File name extension: A file name extension, such as .txt. CLSID: A CLSID GUID in the standard "{GUID}" format. ProgID: An application's ProgID, such as Word.Document.8. Executable name: The name of an application's .exe file. The <see cref="ASSOCF.OPEN_BYEXENAME"/> flag must be set in flags.</param>
/// <param name="extra">An optional string with additional information about the location of the string. It is typically set to a Shell verb such as open. Set this parameter to NULL if it is not used.</param>
public static string AssocQueryString(ASSOCF flags, ASSOCSTR assocStr, string doctype, string extra = null)
{
int bufferSize = 0;
AssocQueryString(flags, assocStr, doctype, extra, null, ref bufferSize);
if (bufferSize == 0)
{
return("");
}
var assoc = new StringBuilder(bufferSize);
AssocQueryString(flags, assocStr, doctype, extra, assoc, ref bufferSize);
return(assoc.ToString());
}
public static string AssocQueryString(ASSOCF flags, ASSOCSTR @string, string association, string extraInfo)
{
return(BufferHelper.BufferInvoke((StringBuffer buffer) =>
{
flags |= ASSOCF.NoTruncate;
HRESULT result;
uint count = buffer.CharCapacity;
while ((result = Imports.AssocQueryStringW(flags, @string, association, extraInfo, buffer, ref count)) == HRESULT.E_POINTER)
{
buffer.EnsureCharCapacity(count);
}
if (result != HRESULT.S_OK)
{
throw Errors.GetIoExceptionForHResult(result, association);
}
// Count includes the null
buffer.Length = count - 1;
return buffer.ToString();
}));
}
public static extern uint AssocQueryString(ASSOCF flags, ASSOCSTR str, string pszAssoc, string pszExtra, [Out] StringBuilder pszOut, [In, Out] ref int pcchOut);
public static extern HRESULT AssocQueryString(ASSOCF flags, ASSOCSTR str,
string pszAssoc, string pszExtra, [Out] StringBuilder pszOut,
ref uint pcchOut);
private static string QueryHttpAssoc(ASSOCSTR assocStr)
{
return(Native.AssocQueryString(ASSOCF.NONE, assocStr, Uri.UriSchemeHttp, ShellOpenCommand));
}
public HRESULT GetString([NativeTypeName("ASSOCF")] uint flags, ASSOCSTR str, [NativeTypeName("LPCWSTR")] ushort *pszExtra, [NativeTypeName("LPWSTR")] ushort *pszOut, [NativeTypeName("DWORD *")] uint *pcchOut)
{
return(((delegate * unmanaged <IQueryAssociations *, uint, ASSOCSTR, ushort *, ushort *, uint *, int>)(lpVtbl[4]))((IQueryAssociations *)Unsafe.AsPointer(ref this), flags, str, pszExtra, pszOut, pcchOut));
}
public static extern AssocQueryStringResult AssocQueryString(ASSOCF flags, ASSOCSTR str, String pszAssoc, String pszExtra, StringBuilder pszOut, ref UInt32 pcchOut);
public static extern int AssocQueryString(ASSOCF flags, ASSOCSTR str, string pszAssoc, string pszExtra, StringBuilder pszOut, ref uint pcchOut);
private static string QueryHttpAssoc (ASSOCSTR assocStr)
{
return Native.AssocQueryString(ASSOCF.NONE, assocStr, Uri.UriSchemeHttp, ShellOpenCommand);
}